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Backpacking Light

Pack less. Be more.

RBTR 0.56oz Membrane 7

Home › Forums › Gear Forums › Make Your Own Gear › RBTR 0.56oz Membrane 7

Viewing 11 posts - 1 through 11 (of 11 total)
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  • Author
    Posts
  • Sep 22, 2018 at 1:15 am #3556803

    Adam Kilpatrick
    BPL Member

    @oysters

    Locale: South Australia

    In case anyone missed it, Ripstop By The Roll have a new wonder fabric, a 7×10 Denier Ripstop Nylon.

    https://ripstopbytheroll.com/collections/membrane/products/0-56-oz-membrane-7-ripstop-nylon

    0.56oz/sqyd

    6.3 CFM

    Downproof

    C0 PFC Free DWR

    Width 58″

    Post if you get to try it!

    Sep 22, 2018 at 3:28 am #3556824

    Ryan Smith
    BPL Member

    @violentgreen

    Locale: East TN

    Almost makes me want to jump back on the horse and make another quilt! Interesting they stayed with a 7d fabric. I know they were testing some 5d nylons a while back. Great time to be a MYOG’er.

    PS – $19/yd a little hard to swallow.

    Ryan

    Sep 22, 2018 at 3:40 am #3556825

    Jerry Adams
    BPL Member

    @retiredjerry

    Locale: Oregon and Washington

    maybe 3 square yards in a quilt.  6 total for inner and outer fabric.  56 fabric would save 0.6 ounces compared to their 66 fabric.  If I was making a quilt I might choose the 56 fabric.

    I made a quilt, vest, and hood with the 66 membrane.  They came out really good.  Fairly fragile though, good for an inside layer, maybe not so good for an outer layer that gets subjected to abuse.

     

    Sep 22, 2018 at 5:44 pm #3556873

    Lester Moore
    BPL Member

    @satori

    Locale: Olympic Peninsula, WA

    maybe 3 square yards in a quilt.  6 total for inner and outer fabric.  56 fabric would save 0.6 ounces compared to their 66 fabric.

    Not sure that it’s worth spending $60 to save 0.6 ounces on a down quilt. That’s $100 per ounce saved, not to mention unknown material longevity. In comparison, moving from a silnylon tent ($300) to a DCF tent ($600) can save several ounces, around $40 – $50 per ounce saved.

    Feb 2, 2019 at 1:56 am #3576334

    Adam Kilpatrick
    BPL Member

    @oysters

    Locale: South Australia

    Anyone seen any MYOG or cottage quilts made out of this yet?

    Feb 2, 2019 at 2:45 am #3576347

    Craig B
    BPL Member

    @kurogane

    Yeah, that price is getting close to DCF territory, and not worth the extra over the .66 stuff.  For me.  It’s pretty far past the point of diminishing returns.

    Feb 2, 2019 at 8:05 pm #3576427

    Rene Ravenel
    BPL Member

    @autox

    A few years ago I did a weight-saved vs cost survey.

    Pick any item of gear and find the cheapest option that meets your feature/quality needs.  Then find lighter options compare the price.

    I arrived a the range of $6 – $12 extra for every ounce saved ($100 – $200 per pound).  This worked for just about everything with the exception of sleeping bags (likely due to the cost of higher fill powers).  Cuben / DCF is way off the top of the chart.  As noted, so is Membrane 7.

    It’s easy to spend $20 on a yard for a small project, but then the weight savings will be so small as to be irrelevant.

    Feb 3, 2019 at 2:36 am #3576492

    John H
    BPL Member

    @johnnyh88

    Locale: The SouthWest

    I bought a couple yards of the stuff on sale when it first came out. Used it in a MYOG bivy. Very nice fabric, seems like it is more breathable than their Membrane 10.

    I might use it in a MYOG quilt, going with 5 yards in all black (if they ever stock it again). My logic is that if I’m spending the time to design, sew, and stuff my own quilt, then I might as well make it unique and the lightest I can. I do really like their Membrane 10 fabric though, so I might just go with it as a “known good” choice.

    Feb 5, 2019 at 2:00 am #3576805

    Sam Farrington
    BPL Member

    @scfhome

    Locale: Chocorua NH, USA

    It appears that all of RBTR’s sub one oz breathable nylons are calendered, meaning that one side of the fabric is run over a hot roller, melting the fibers to a shiny finish on that side.  The concern is that the melting may reduce the vapor permeability of the material, a problem for a sleeping bag or quilt that needs to breath to keep you dry, regardless of whether the calendered side is on the inside.

    Several years ago, a BPL member who is now in the gear business sponsored a joint purchase of a .66 oz fabric that was not calendered.  About half of it was repurchased by another member, but still have the other half, and that would be my choice for a bag or quilt.  Just enough left for that.

    Feb 5, 2019 at 2:58 am #3576812

    John H
    BPL Member

    @johnnyh88

    Locale: The SouthWest

    I don’t think a lightweight non-calendered fabric would work well for a down quilt. Too much down loss. Membrane 10 works well for me in my quilt – no issues.

    A non-calendered light fabric would be nice for a synthetic quilt though.

    Feb 6, 2019 at 2:51 am #3577064

    Jeremy U
    BPL Member

    @ai_3_us

    Locale: PNW

    Several years ago, a BPL member who is now in the gear business sponsored a joint purchase of a .66 oz fabric that was not calendered. About half of it was repurchased by another member, but still have the other half, and that would be my choice for a bag or quilt. Just enough left for that.

    So, are you going to share it? :)

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